Skip to main content

Experiment discovers ‘deadliest distractions’ at the wheel

Road safety charity IAM RoadSmart and UK car magazine Auto Express teamed up to find out which are the deadliest behind-the-wheel distractions with programming a sat-nav found to be the worst. Auto Express consumer editor Joe Finnerty and British Formula 3 hopeful Jamie Chadwick were put to the test in a professional racing simulator at Base Performance Simulators in Banbury. They were both assessed to see how they coped with the most common distracting tasks on UK roads, while completing timed laps and bra
April 28, 2017 Read time: 2 mins
Road safety charity IAM RoadSmart and UK car magazine Auto Express teamed up to find out which are the deadliest behind-the-wheel distractions with programming a sat-nav found to be the worst.


Auto Express consumer editor Joe Finnerty and British Formula 3 hopeful Jamie Chadwick were put to the test in a professional racing simulator at Base Performance Simulators in Banbury. They were both assessed to see how they coped with the most common distracting tasks on UK roads, while completing timed laps and braking at a specific point. IAM RoadSmart’s head of technical policy, Tim Shallcross, monitored the findings.

The results showed a large difference in performance between distractions. Entering a postcode into a sat-nav app proved to be the worst, followed by sending a text message. Other tasks carried out included eating, drinking, making a phone call and talking to a passenger.

The least distracting task for lap time was talking to a passenger, but it still ranked very poorly for the braking test. According to Shallcross, both drivers failed to brake accurately at the target line. He noted that their ability to drive normally confirms the difference between the extra distraction of a phone conversation and the natural act of talking to a passenger, but still shows that any distraction reduces attention, and in an emergency, it might be critical.

Related Content

  • UK motorists ‘relax attitudes’ on distracted driving
    September 15, 2016
    Research for the RAC’s Report on Motoring 2016 has revealed that for some, attitudes towards handheld mobile use have worryingly relaxed over the last two years. The proportion of people who feel it is acceptable to take a quick call on a handheld phone has doubled from seven per cent in 2014 to 14 per cent in 2016 and the percentage of drivers who feel it is safe to check social media on their phone when in stationary traffic, either at traffic lights or in congestion, has increased from 14 per cent in
  • Intelligence-led approach to combat drink and drug driving
    August 11, 2016
    The latest national figures show that forces across the UK followed a targeted approach that saw an increase in alcohol tests showing a positive, failed or refused reading. While the percentage of drivers tested reduced, officers targeted drink drive hotspots using an intelligence-led approach. The figures show that a total of 45,267 breath tests were ministered; 4,539, or 10 per cent, were positive, refused or failed of total tested that were positive, failed or refused. A total of 279 drug field impair
  • Brake, IAM concerned at government figures on UK drink-drive habit
    August 7, 2015
    Brake, the road safety charity, and the Institute of Advanced Motorists (IAM), have responded to the latest government figures which they say show Britain is still failing to adequately tackle its drink drive problem. A final estimate shows 240 people were killed by drivers over the legal drink drive limit in 2013, while provisional estimates suggest at least that number were killed in 2014. However, the number of people seriously injured in drink drive crashes did fall by eight per cent to 1,100 from 20
  • IAM responds to illegal phone use study
    February 26, 2015
    The UK’s Institute of Advanced Motorists has responded to the Department for Transport study carried out by the Transport Research Laboratory (TRL) into the prevalence of illegal mobile phone use while driving, saying that the results are disappointing but not at all surprising. The figures show that, in 2014, 1.1 per cent of drivers in England and Scotland were observed holding a phone in their hand with a further 0.5 per cent observed holding the phone to their ear, equating to more than 470,000 motorists